WO2021059952A1 - Head-up display - Google Patents
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- WO2021059952A1 WO2021059952A1 PCT/JP2020/033871 JP2020033871W WO2021059952A1 WO 2021059952 A1 WO2021059952 A1 WO 2021059952A1 JP 2020033871 W JP2020033871 W JP 2020033871W WO 2021059952 A1 WO2021059952 A1 WO 2021059952A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Arrangement of adaptations of instruments
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
Definitions
- An object of the present disclosure is to provide a head-up display that displays a virtual image with high display quality according to the viewpoint of a viewer.
- a head-up display that displays a virtual image with high display quality according to the viewpoint of the viewer.
- the head-up display HUD is mounted on the instrument panel of the vehicle and emits the display light DL to the windshield WS of the vehicle.
- the display light DL represents vehicle information such as the traveling speed of the vehicle, various vehicle warnings, and route guidance information.
- vehicle information such as the traveling speed of the vehicle, various vehicle warnings, and route guidance information.
- the light source 11 is composed of 28 LED light sources (4 vertical ⁇ 7 horizontal) arranged on a two-dimensional plane. Each light source 11 (0,0) to 11 (6,4) corresponds to each lattice region eb (0,0) to eb (6,4) in which the eyebox EB is divided into a grid pattern of vertical 4 ⁇ horizontal 7. To do. Specifically, when the light source 11 (0,0) is turned on, the virtual image Vi of the display light DL emitted from the liquid crystal panel 13 can be visually recognized from the grid region eb (0,0) of the eyebox EB.
- the control circuit board lights the reference light source 11A corresponding to the grid region where each viewpoint VrR and VrL is located in each grid region eb (0,0) to eb (6,4) in the eyebox EB.
- a virtual image Vi that matches the viewpoint of the viewer Vr is displayed.
- the head-up display HUD uses a reference light source 11A corresponding to the grid region eb into which one of the viewpoints VrR and VrL of the viewer Vr is included in the grid region eb when only one of the viewpoints is in the grid region eb. Turn it on. With this configuration, the virtual image Vi can be appropriately visually recognized even when the viewpoint of the viewer Vr is on the boundary between the inside and outside of the eyebox EB.
- the head-up display HUD when all of the viewpoints VrR and VrL of both eyes of the viewer Vr move from the inside of the lattice region eb to the outside of the region, one of the viewpoints VrR and VrL of both eyes of the viewer Vr is the last.
- the lighting of the reference light source 11A corresponding to the lattice region eb that has been entered is continued.
- the virtual image Vi can be appropriately visually recognized even when the viewpoint of the viewer Vr is on the boundary between the inside and outside of the eyebox EB.
- the head-up display HUD of the present disclosure may be modified as follows.
- the control circuit board is set to various lighting intensities for each of the light sources 11.
- the various lighting intensities for each of the light sources 11 indicate that not all the light sources 11 have uniform lighting intensities. In other words, different lighting intensities are individually set for each of the light sources 11. Further, in setting various lighting intensities for each of the light sources 11, when a plurality of light sources 11 are associated with one grid region of the eyebox EB, the light sources 11 are divided into a plurality of groups and each group is lit. The strength may be set.
- step S5 the control circuit board determines that neither the viewpoints VrR or VrL of both eyes is around the eyebox EB, and in step S7, the lighting intensity of the light source 11 based on the last viewpoint is gradually dimmed. To go. When either the viewpoint VrR or VrL of both eyes enters the eye box EB or its vicinity again from this dimmed state, the control circuit board may gradually brighten so as to approach the target lighting intensity. Good. With this configuration, it is possible to reduce the risk of dazzling the viewer Vr when the lighting intensity suddenly increases from the dimmed state.
- the viewpoint information is not limited to the viewpoints VrR and VrL of both eyes of the viewer Vr.
- the control circuit board may obtain the position between the eyebrows of the viewer Vr from an external viewpoint detection device and estimate the viewpoints VrR and VrL of both eyes of the viewer Vr from the position between the eyebrows.
- the viewpoint detection device may be built in the head-up display HUD.
Abstract
The present invention provides a head-up display capable of performing high-quality virtual image display in accordance with a viewer's viewpoint. This head-up display HUD is provided with: a plurality of light sources 11 arranged on a two-dimensional plane; a display 1 that is irradiated with light from the light sources 11 and that transmits said light so as to emit display light DL indicating display information; and a control unit that causes the respective light sources 11 to emit light at various intensities. The light sources 11 each correspond to one of lattice regions eb formed by dividing, in a lattice shape, an eye box EB which becomes a visible region of a virtual image Vi. When only one viewpoint of the viewpoints of the two eyes of a viewer Vr is in the lattice regions eb, the control unit turns on the light of a reference light source 11A corresponding to a lattice region eb in which said one viewpoint is included.
Description
本開示は、虚像を表示するヘッドアップディスプレイに関する。
This disclosure relates to a head-up display that displays a virtual image.
従来のヘッドアップディスプレイとして特許文献１に開示されたものがある。このヘッドアップディスプレイは、アイボックスへの光照射効率を向上させ視点移動に伴う虚像表示の輝度変化量を抑制するものである。
There is a conventional head-up display disclosed in Patent Document 1. This head-up display improves the light irradiation efficiency of the eye box and suppresses the amount of change in the brightness of the virtual image display due to the movement of the viewpoint.
しかしながら、視認者の視点の変化に合わせて適切に照明するという観点で改善の余地がある。
However, there is room for improvement in terms of lighting appropriately according to changes in the viewpoint of the viewer.
本開示は、視認者の視点に合わせた表示品位の高い虚像表示を行うヘッドアップディスプレイを提供することを目的とする。
An object of the present disclosure is to provide a head-up display that displays a virtual image with high display quality according to the viewpoint of a viewer.
本開示のヘッドアップディスプレイは、
二次元平面上に配列された複数の光源と、
前記光源によって透過照明されて表示情報を表す表示光を出射する表示器と、
前記複数の光源の各々に対し多様な照明強度で照明させる制御部と、を備え、
前記表示光の虚像を視認させるヘッドアップディスプレイであって、
前記複数の光源の各々は、前記虚像の視認可能領域となるアイボックスを格子状に分割したいずれかの格子領域に対応し、
前記制御部は、前記虚像を視認する視認者の視点に関する視点情報が入力され、前記視点情報に基づく前記視認者の両眼の各々の視点が入る前記格子領域に対応する前記光源である基準光源を点灯させ、
前記制御部は、前記視認者の両眼の視点のいずれか一方の視点のみが前記格子領域内にいるとき、前記一方の視点が入る前記格子領域に対応する前記基準光源を点灯させる。 The head-up display of the present disclosure is
Multiple light sources arranged on a two-dimensional plane,
A display that emits display light that is transmitted and illuminated by the light source and represents display information.
A control unit for illuminating each of the plurality of light sources with various illumination intensities is provided.
A head-up display that allows the virtual image of the display light to be visually recognized.
Each of the plurality of light sources corresponds to any lattice region obtained by dividing the eye box, which is a visible region of the virtual image, into a grid pattern.
The control unit is a reference light source which is a light source corresponding to the grid region in which viewpoint information regarding the viewpoint of a viewer who visually recognizes the virtual image is input and the viewpoints of both eyes of the viewer based on the viewpoint information are entered. Turn on
When only one of the viewpoints of both eyes of the viewer is in the grid region, the control unit lights the reference light source corresponding to the grid region into which the one viewpoint enters.
二次元平面上に配列された複数の光源と、
前記光源によって透過照明されて表示情報を表す表示光を出射する表示器と、
前記複数の光源の各々に対し多様な照明強度で照明させる制御部と、を備え、
前記表示光の虚像を視認させるヘッドアップディスプレイであって、
前記複数の光源の各々は、前記虚像の視認可能領域となるアイボックスを格子状に分割したいずれかの格子領域に対応し、
前記制御部は、前記虚像を視認する視認者の視点に関する視点情報が入力され、前記視点情報に基づく前記視認者の両眼の各々の視点が入る前記格子領域に対応する前記光源である基準光源を点灯させ、
前記制御部は、前記視認者の両眼の視点のいずれか一方の視点のみが前記格子領域内にいるとき、前記一方の視点が入る前記格子領域に対応する前記基準光源を点灯させる。 The head-up display of the present disclosure is
Multiple light sources arranged on a two-dimensional plane,
A display that emits display light that is transmitted and illuminated by the light source and represents display information.
A control unit for illuminating each of the plurality of light sources with various illumination intensities is provided.
A head-up display that allows the virtual image of the display light to be visually recognized.
Each of the plurality of light sources corresponds to any lattice region obtained by dividing the eye box, which is a visible region of the virtual image, into a grid pattern.
The control unit is a reference light source which is a light source corresponding to the grid region in which viewpoint information regarding the viewpoint of a viewer who visually recognizes the virtual image is input and the viewpoints of both eyes of the viewer based on the viewpoint information are entered. Turn on
When only one of the viewpoints of both eyes of the viewer is in the grid region, the control unit lights the reference light source corresponding to the grid region into which the one viewpoint enters.
本開示によれば、視認者の視点に合わせた表示品位の高い虚像表示を行うヘッドアップディスプレイを提供できる。
According to the present disclosure, it is possible to provide a head-up display that displays a virtual image with high display quality according to the viewpoint of the viewer.
本開示のヘッドアップディスプレイＨＵＤを添付図面（図１～図８）に基づいて以下に説明する。以下の説明において、方向Ｔは上方向を示し、方向Ｂは下方向を示し、方向Ｒは右方向を示し、方向Ｌは左方向を示し、方向Ｆは車両前方を示し、方向Ｒｒは車両後方を示す。
The head-up display HUD of the present disclosure will be described below based on the attached drawings (FIGS. 1 to 8). In the following description, the direction T indicates the upward direction, the direction B indicates the downward direction, the direction R indicates the right direction, the direction L indicates the left direction, the direction F indicates the front of the vehicle, and the direction Rr indicates the rear of the vehicle. Is shown.
図１を参照する。ヘッドアップディスプレイＨＵＤは、車両のインストルメントパネルに搭載され、表示光ＤＬを車両のウインドシールドＷＳに出射する。表示光ＤＬは、例えば、車両の走行速度や各種車両警告、経路案内情報などの車両情報を表すものである。車両の搭乗者（視認者）Ｖｒは、アイボックスＥＢからウインドシールドＷＳを見ると、表示光ＤＬの虚像ＶｉをウインドシールドＷＳの前方に見ることができる。
Refer to FIG. The head-up display HUD is mounted on the instrument panel of the vehicle and emits the display light DL to the windshield WS of the vehicle. The display light DL represents vehicle information such as the traveling speed of the vehicle, various vehicle warnings, and route guidance information. When the passenger (visual viewer) Vr of the vehicle looks at the windshield WS from the eyebox EB, he / she can see the virtual image Vi of the display light DL in front of the windshield WS.
ヘッドアップディスプレイＨＵＤは、表示器１と、反射鏡２と、図示しない制御回路基板（制御部）を有する。
The head-up display HUD has a display 1, a reflector 2, and a control circuit board (control unit) (not shown).
表示器１は、制御回路基板に制御されて、車両情報を表す画像を表示し、この画像を表す表示光ＤＬを出射する。
The display 1 is controlled by the control circuit board to display an image representing vehicle information, and emits a display light DL representing this image.
反射鏡２は、ヘッドアップディスプレイＨＵＤの筐体内で表示光ＤＬを折り返し、ウインドシールドＷＳに向けて反射する反射鏡である。
反射鏡２は、例えば、回転軸ＡＸを中心に回動可能な凹面鏡である。反射鏡２は、制御回路基板に制御されてアイボックスＥＢを上下方向（ＴＢ方向）に移動することができる。 Thereflector 2 is a reflector that folds back the display light DL inside the housing of the head-up display HUD and reflects it toward the windshield WS.
Thereflector 2 is, for example, a concave mirror that can rotate about the rotation axis AX. The reflector 2 can move the eyebox EB in the vertical direction (TB direction) under the control of the control circuit board.
反射鏡２は、例えば、回転軸ＡＸを中心に回動可能な凹面鏡である。反射鏡２は、制御回路基板に制御されてアイボックスＥＢを上下方向（ＴＢ方向）に移動することができる。 The
The
制御回路基板は、表示器１及び反射鏡２を制御する制御回路を有する。制御回路基板は、図示しない外部の視点検出装置から車両の搭乗者（視認者）Ｖｒの右眼の視点ＶｒＲ及び左眼の視点ＶｒＬの位置情報に関する視点情報が入力される。制御回路基板は、この視点情報に基づいて、各視点ＶｒＲ、ＶｒＬがアイボックスＥＢ内のどの位置にあるのか、または、アイボックスＥＢ外にあるのかを判断する。
The control circuit board has a control circuit that controls the display 1 and the reflector 2. In the control circuit board, viewpoint information regarding the position information of the right eye viewpoint VrR and the left eye viewpoint VrL of the vehicle occupant (viewer) Vr is input from an external viewpoint detection device (not shown). Based on this viewpoint information, the control circuit board determines at which position each viewpoint VrR and VrL is in the eyebox EB or outside the eyebox EB.
図２～図４を参照する。表示器１は、光源１１、フィールドレンズ１２、液晶パネル１３を有する。フィールドレンズ１２は、第１フィールドレンズ１２ａと第２フィールドレンズ１２ｂから構成され、光源１１の基準光源１１Ａから出射される照明光が液晶パネル１３の全面を透過照明するように設計された前段光学部材（バックライト光学部材）である。また、フィールドレンズ１２は、液晶パネル１３から出射される表示光ＤＬが後段光学部材（反射鏡２及びウインドシールドＷＳから構成されるＨＵＤ光学部材）を経てアイボックスＥＢ内の任意の位置にある視認者Ｖｒの目に届くように設計されている。
Refer to FIGS. 2 to 4. The display 1 includes a light source 11, a field lens 12, and a liquid crystal panel 13. The field lens 12 is composed of a first field lens 12a and a second field lens 12b, and is a front-stage optical member designed so that the illumination light emitted from the reference light source 11A of the light source 11 transmits and illuminates the entire surface of the liquid crystal panel 13. (Backlight optical member). Further, in the field lens 12, the display light DL emitted from the liquid crystal panel 13 is visually recognized at an arbitrary position in the eye box EB via the rear-stage optical member (HUD optical member composed of the reflector 2 and the windshield WS). It is designed to reach the eyes of the person Vr.
光源１１は、二次元平面上に配列された縦４灯×横７灯の２８灯のＬＥＤ光源で構成されている。各光源１１（０，０）～１１（６，４）は、アイボックスＥＢを縦４×横７の格子状に分割した各格子領域ｅｂ（０，０）～ｅｂ（６，４）に対応する。具体的に例示すると、光源１１（０，０）を点灯すると、液晶パネル１３から出射される表示光ＤＬの虚像Ｖｉは、アイボックスＥＢの格子領域ｅｂ（０，０）から視認できる。
The light source 11 is composed of 28 LED light sources (4 vertical × 7 horizontal) arranged on a two-dimensional plane. Each light source 11 (0,0) to 11 (6,4) corresponds to each lattice region eb (0,0) to eb (6,4) in which the eyebox EB is divided into a grid pattern of vertical 4 × horizontal 7. To do. Specifically, when the light source 11 (0,0) is turned on, the virtual image Vi of the display light DL emitted from the liquid crystal panel 13 can be visually recognized from the grid region eb (0,0) of the eyebox EB.
図５を参照する。制御回路基板は、アイボックスＥＢ内の各格子領域ｅｂ（０，０）～ｅｂ（６，４）内において各視点ＶｒＲ、ＶｒＬが位置する格子領域に対応する基準光源１１Ａを点灯することで、視認者Ｖｒの視点に合わせた虚像Ｖｉを表示する。基準光源１１Ａを点灯させるにあたっては、視認者Ｖｒの微細な視点移動を考慮して、基準光源１１Ａの近傍の光源も点灯させることが表示品位を向上させる観点で好ましい。具体的に例示すると、基準光源１１Ａの輝度（点灯強度）をａとし、基準光源１１Ａの左右の光源の輝度をｂとし、基準光源１１Ａの上下の光源の輝度をｃとし、基準光源１１Ａの斜めの光源の輝度をｄとしたとき、а：ｂ：ｃ：ｄ＝１：０．８：０．６：０．４とすることが好ましい。このように、制御回路基板は、検出した視点が位置する格子領域に対応する基準光源１１Ａ、または基準光源１１Ａ及び近傍光源のみを点灯させる。図５の例では図５の例では基準光源１１の近傍として８近傍の光源を点灯させたが、これに限らず、上下左右の４近傍の光源としてもよい。点灯光源を少なくするほど省電力となり、光源が発する熱を抑制できる。
Refer to FIG. The control circuit board lights the reference light source 11A corresponding to the grid region where each viewpoint VrR and VrL is located in each grid region eb (0,0) to eb (6,4) in the eyebox EB. A virtual image Vi that matches the viewpoint of the viewer Vr is displayed. When turning on the reference light source 11A, it is preferable to turn on the light source in the vicinity of the reference light source 11A in consideration of the minute movement of the viewpoint of the viewer Vr from the viewpoint of improving the display quality. Specifically, the brightness (lighting intensity) of the reference light source 11A is a, the brightness of the left and right light sources of the reference light source 11A is b, the brightness of the light sources above and below the reference light source 11A is c, and the diagonal of the reference light source 11A is oblique. When the brightness of the light source of is d, it is preferable that а: b: c: d = 1: 0.8: 0.6: 0.4. In this way, the control circuit board lights only the reference light source 11A or the reference light source 11A and the vicinity light source corresponding to the lattice region where the detected viewpoint is located. In the example of FIG. 5, in the example of FIG. 5, the light source in the vicinity of 8 is turned on as the vicinity of the reference light source 11, but the present invention is not limited to this, and the light source in the vicinity of 4 in the vertical and horizontal directions may be used. The smaller the number of lighting light sources, the more power is saved, and the heat generated by the light sources can be suppressed.
視認者Ｖｒの視点に合わせた光源１１の点灯制御手順について図６を参照して説明する。
The lighting control procedure of the light source 11 according to the viewpoint of the viewer Vr will be described with reference to FIG.
制御回路基板は、車両のイグニッションスイッチがオンされてヘッドアップディスプレイＨＵＤが起動すると、ステップＳ１の手続を開始する。
The control circuit board starts the procedure of step S1 when the ignition switch of the vehicle is turned on and the head-up display HUD is activated.
（ステップＳ１）
制御回路基板は、外部の視点検出装置から入力された視点情報に基づいて、視認者Ｖｒの両眼の視点ＶｒＲ、ＶｒＬがアイボックスＥＢ内にあるかどうかを判定する。制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬがアイボックスＥＢ内にあると判定した場合、ステップＳ２の手続を開始する。そうでない場合、制御回路基板は、ステップＳ３の手続を開始する。 (Step S1)
The control circuit board determines whether or not the viewpoints VrR and VrL of both eyes of the viewer Vr are in the eyebox EB based on the viewpoint information input from the external viewpoint detection device. When the control circuit board determines that the viewpoints VrR and VrL of both eyes are in the eyebox EB, the procedure of step S2 is started. If not, the control circuit board initiates the procedure of step S3.
制御回路基板は、外部の視点検出装置から入力された視点情報に基づいて、視認者Ｖｒの両眼の視点ＶｒＲ、ＶｒＬがアイボックスＥＢ内にあるかどうかを判定する。制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬがアイボックスＥＢ内にあると判定した場合、ステップＳ２の手続を開始する。そうでない場合、制御回路基板は、ステップＳ３の手続を開始する。 (Step S1)
The control circuit board determines whether or not the viewpoints VrR and VrL of both eyes of the viewer Vr are in the eyebox EB based on the viewpoint information input from the external viewpoint detection device. When the control circuit board determines that the viewpoints VrR and VrL of both eyes are in the eyebox EB, the procedure of step S2 is started. If not, the control circuit board initiates the procedure of step S3.
（ステップＳ２）
制御回路基板は、左眼の視点ＶｒＬと右眼の視点ＶｒＲが位置するアイボックスＥＢの格子領域に対応する基準光源１１Ａ及びその近傍光源を点灯させる。具体的に例示すると、右眼の視点ＶｒＲが格子領域ｅｂ（２，２）に位置し、左眼の視点ＶｒＬが格子領域ｅｂ（４，２）に位置していると判断した場合、図７に示すように、光源１１（２，２）及び光源１１（４，２）を基準光源１１Ａとし、基準光源１１Ａ及びその８近傍の光源を所定の点灯強度で点灯させる。点灯後、ステップＳ１の手続を開始する。 (Step S2)
The control circuit board turns on thereference light source 11A corresponding to the lattice region of the eye box EB where the viewpoint VrL of the left eye and the viewpoint VrR of the right eye are located, and a light source in the vicinity thereof. Specifically, when it is determined that the light source VrR of the right eye is located in the lattice region eb (2, 2) and the light source VrL of the left eye is located in the lattice region eb (4, 2), FIG. As shown in the above, the light source 11 (2, 2) and the light source 11 (4, 2) are set as the reference light source 11A, and the reference light source 11A and the light sources in the vicinity of the reference light source 11A are lit with a predetermined lighting intensity. After lighting, the procedure of step S1 is started.
制御回路基板は、左眼の視点ＶｒＬと右眼の視点ＶｒＲが位置するアイボックスＥＢの格子領域に対応する基準光源１１Ａ及びその近傍光源を点灯させる。具体的に例示すると、右眼の視点ＶｒＲが格子領域ｅｂ（２，２）に位置し、左眼の視点ＶｒＬが格子領域ｅｂ（４，２）に位置していると判断した場合、図７に示すように、光源１１（２，２）及び光源１１（４，２）を基準光源１１Ａとし、基準光源１１Ａ及びその８近傍の光源を所定の点灯強度で点灯させる。点灯後、ステップＳ１の手続を開始する。 (Step S2)
The control circuit board turns on the
（ステップＳ３）
制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのいずれか片眼の視点のみがアイボックスＥＢ内にあるかどうかを判定する。両眼の視点ＶｒＲ、ＶｒＬのいずれか片眼の視点のみがアイボックスＥＢ内にあると判定した場合、ステップＳ４の手続を開始する。そうでない場合、制御回路基板は、ステップＳ５の手続を開始する。 (Step S3)
The control circuit board determines whether or not only one of the viewpoints VrR and VrL of both eyes is in the eye box EB. When it is determined that only one of the viewpoints of both eyes VrR and VrL is in the eye box EB, the procedure of step S4 is started. If not, the control circuit board initiates the procedure of step S5.
制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのいずれか片眼の視点のみがアイボックスＥＢ内にあるかどうかを判定する。両眼の視点ＶｒＲ、ＶｒＬのいずれか片眼の視点のみがアイボックスＥＢ内にあると判定した場合、ステップＳ４の手続を開始する。そうでない場合、制御回路基板は、ステップＳ５の手続を開始する。 (Step S3)
The control circuit board determines whether or not only one of the viewpoints VrR and VrL of both eyes is in the eye box EB. When it is determined that only one of the viewpoints of both eyes VrR and VrL is in the eye box EB, the procedure of step S4 is started. If not, the control circuit board initiates the procedure of step S5.
（ステップＳ４）
制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのうちアイボックスＥＢ内にあると判断した視点が位置する格子領域に対応する基準光源１１Ａ及びその近傍光源を点灯させる。具体的に例示すると、右眼の視点ＶｒＲが格子領域ｅｂ（６，２）に位置していると判断した場合、図８に示すように、光源１１（６，２）を基準光源１１Ａとし、基準光源１１Ａ及びその８近傍の光源を所定の点灯強度で点灯させる。点灯後、ステップＳ１の手続を開始する。 (Step S4)
The control circuit board lights thereference light source 11A and its neighboring light sources corresponding to the lattice region in which the viewpoint determined to be in the eyebox EB of the viewpoints VrR and VrL of both eyes is located. Specifically, when it is determined that the viewpoint VrR of the right eye is located in the lattice region eb (6, 2), the light source 11 (6, 2) is set as the reference light source 11A as shown in FIG. The reference light source 11A and the light sources in the vicinity of the reference light source 11A are lit with a predetermined lighting intensity. After lighting, the procedure of step S1 is started.
制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのうちアイボックスＥＢ内にあると判断した視点が位置する格子領域に対応する基準光源１１Ａ及びその近傍光源を点灯させる。具体的に例示すると、右眼の視点ＶｒＲが格子領域ｅｂ（６，２）に位置していると判断した場合、図８に示すように、光源１１（６，２）を基準光源１１Ａとし、基準光源１１Ａ及びその８近傍の光源を所定の点灯強度で点灯させる。点灯後、ステップＳ１の手続を開始する。 (Step S4)
The control circuit board lights the
（ステップＳ５）
制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのいずれかがアイボックスＥＢの周辺にあるかどうかを判断する。周辺とは、例えば、アイボックスＥＢ外縁から２０ｃｍの範囲である。制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのいずれかがアイボックスＥＢの周辺にあると判断した場合、ステップＳ６の手続を開始する。そうでない場合、制御回路基板は、ステップＳ７の手続を開始する。 (Step S5)
The control circuit board determines whether or not any of the binocular viewpoints VrR and VrL is in the vicinity of the eyebox EB. The periphery is, for example, a range of 20 cm from the outer edge of the eye box EB. When the control circuit board determines that either the viewpoint VrR or VrL of both eyes is in the vicinity of the eyebox EB, the procedure of step S6 is started. If not, the control circuit board initiates the procedure of step S7.
制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのいずれかがアイボックスＥＢの周辺にあるかどうかを判断する。周辺とは、例えば、アイボックスＥＢ外縁から２０ｃｍの範囲である。制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのいずれかがアイボックスＥＢの周辺にあると判断した場合、ステップＳ６の手続を開始する。そうでない場合、制御回路基板は、ステップＳ７の手続を開始する。 (Step S5)
The control circuit board determines whether or not any of the binocular viewpoints VrR and VrL is in the vicinity of the eyebox EB. The periphery is, for example, a range of 20 cm from the outer edge of the eye box EB. When the control circuit board determines that either the viewpoint VrR or VrL of both eyes is in the vicinity of the eyebox EB, the procedure of step S6 is started. If not, the control circuit board initiates the procedure of step S7.
（ステップＳ６）
制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのうちアイボックスＥＢ内に最後に位置していた視点を最後の視点としたとき、最後の視点が位置していた格子領域に対応する基準光源１１Ａ及びその近傍光源を点灯させる。具体的に例示すると、最後の視点が格子領域ｅｂ（６，２）に位置していた場合、図８に示すように、光源１１（６，２）を基準光源１１Ａとし、基準光源１１Ａ及びその８近傍の光源を所定の点灯強度で点灯させる。つまり、最後の視点に基づく光源１１の点灯が維持される。制御回路基板は、その後、ステップＳ１の手続を開始する。 (Step S6)
The control circuit board is areference light source 11A corresponding to the lattice region in which the last viewpoint is located when the last viewpoint in the eyebox EB of the viewpoints VrR and VrL of both eyes is set as the last viewpoint. And its neighboring light sources are turned on. Specifically, when the last viewpoint is located in the grid region eb (6, 2), as shown in FIG. 8, the light source 11 (6, 2) is set as the reference light source 11A, and the reference light source 11A and the reference light source 11A thereof are used. A light source in the vicinity of 8 is turned on with a predetermined lighting intensity. That is, the lighting of the light source 11 based on the last viewpoint is maintained. The control circuit board then initiates the procedure of step S1.
制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのうちアイボックスＥＢ内に最後に位置していた視点を最後の視点としたとき、最後の視点が位置していた格子領域に対応する基準光源１１Ａ及びその近傍光源を点灯させる。具体的に例示すると、最後の視点が格子領域ｅｂ（６，２）に位置していた場合、図８に示すように、光源１１（６，２）を基準光源１１Ａとし、基準光源１１Ａ及びその８近傍の光源を所定の点灯強度で点灯させる。つまり、最後の視点に基づく光源１１の点灯が維持される。制御回路基板は、その後、ステップＳ１の手続を開始する。 (Step S6)
The control circuit board is a
（ステップＳ７）
制御回路基板は、最後の視点に基づく光源１１の点灯強度を一段階減光する。この一段階減光は、点灯強度を９０％にするものである。制御回路基板は、所定時間（例えば、１秒）後に、ステップＳ１の手続を開始する。つまり、制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのいずれの視点もアイボックスＥＢ内あるいはその周辺にないと判断すると、最後の視点に基づく光源１１の点灯強度を段階的に減光していき、いずれは消灯する。 (Step S7)
The control circuit board dims the lighting intensity of thelight source 11 based on the last viewpoint by one step. This one-step dimming makes the lighting intensity 90%. The control circuit board starts the procedure of step S1 after a predetermined time (for example, 1 second). That is, when the control circuit board determines that neither the viewpoints VrR or VrL of both eyes is in or around the eye box EB, the lighting intensity of the light source 11 based on the last viewpoint is gradually dimmed. I will turn off the lights eventually.
制御回路基板は、最後の視点に基づく光源１１の点灯強度を一段階減光する。この一段階減光は、点灯強度を９０％にするものである。制御回路基板は、所定時間（例えば、１秒）後に、ステップＳ１の手続を開始する。つまり、制御回路基板は、両眼の視点ＶｒＲ、ＶｒＬのいずれの視点もアイボックスＥＢ内あるいはその周辺にないと判断すると、最後の視点に基づく光源１１の点灯強度を段階的に減光していき、いずれは消灯する。 (Step S7)
The control circuit board dims the lighting intensity of the
以上、本開示のヘッドアップディスプレイＨＵＤの構成について説明した。
The configuration of the head-up display HUD of the present disclosure has been described above.
ヘッドアップディスプレイＨＵＤは、虚像Ｖｉを視認する視認者Ｖｒの視点ＶｒＲ，ＶｒＬに関する視点情報が入力され、視点情報に基づく視認者Ｖｒの両眼の各々の視点ＶｒＲ，ＶｒＬが入る格子領域ｅｂ対応する光源である基準光源１１Ａを点灯させる。
このように構成することで、視認者Ｖｒの視点に合わせた適切な光源１１の点灯数となるため、光源１１を全部点灯する場合に比べて省電力となり、光源が発する熱を抑制できる。 The head-up display HUD corresponds to a lattice region eb in which viewpoint information regarding the viewpoints VrR and VrL of the viewer Vr who visually recognizes the virtual image Vi is input and the viewpoints VrR and VrL of each eye of the viewer Vr based on the viewpoint information are entered. Thereference light source 11A, which is a light source, is turned on.
With this configuration, the number of lights of thelight source 11 is appropriate for the viewpoint of the viewer Vr, so that the power consumption is reduced as compared with the case where all the light sources 11 are turned on, and the heat generated by the light source can be suppressed.
このように構成することで、視認者Ｖｒの視点に合わせた適切な光源１１の点灯数となるため、光源１１を全部点灯する場合に比べて省電力となり、光源が発する熱を抑制できる。 The head-up display HUD corresponds to a lattice region eb in which viewpoint information regarding the viewpoints VrR and VrL of the viewer Vr who visually recognizes the virtual image Vi is input and the viewpoints VrR and VrL of each eye of the viewer Vr based on the viewpoint information are entered. The
With this configuration, the number of lights of the
また、ヘッドアップディスプレイＨＵＤは、視認者Ｖｒの両眼の視点ＶｒＲ，ＶｒＬのいずれか一方の視点のみが格子領域ｅｂ内にいるとき、一方の視点が入る格子領域ｅｂに対応する基準光源１１Ａを点灯させる。
このように構成することで、視認者Ｖｒの視点がアイボックスＥＢの内外の境界にある場合においても適切に虚像Ｖｉを視認させることができる。 Further, the head-up display HUD uses areference light source 11A corresponding to the grid region eb into which one of the viewpoints VrR and VrL of the viewer Vr is included in the grid region eb when only one of the viewpoints is in the grid region eb. Turn it on.
With this configuration, the virtual image Vi can be appropriately visually recognized even when the viewpoint of the viewer Vr is on the boundary between the inside and outside of the eyebox EB.
このように構成することで、視認者Ｖｒの視点がアイボックスＥＢの内外の境界にある場合においても適切に虚像Ｖｉを視認させることができる。 Further, the head-up display HUD uses a
With this configuration, the virtual image Vi can be appropriately visually recognized even when the viewpoint of the viewer Vr is on the boundary between the inside and outside of the eyebox EB.
また、ヘッドアップディスプレイＨＵＤは、視認者Ｖｒの両眼の視点ＶｒＲ，ＶｒＬのすべてが格子領域ｅｂ内から領域外に移動したとき、視認者Ｖｒの両眼の視点ＶｒＲ，ＶｒＬのいずれかが最後に入っていた格子領域ｅｂに対応する基準光源１１Ａの点灯を継続する。
このように構成することで、視認者Ｖｒの視点がアイボックスＥＢ内外の境界にある場合においても適切に虚像Ｖｉを視認させることができる。 Further, in the head-up display HUD, when all of the viewpoints VrR and VrL of both eyes of the viewer Vr move from the inside of the lattice region eb to the outside of the region, one of the viewpoints VrR and VrL of both eyes of the viewer Vr is the last. The lighting of thereference light source 11A corresponding to the lattice region eb that has been entered is continued.
With this configuration, the virtual image Vi can be appropriately visually recognized even when the viewpoint of the viewer Vr is on the boundary between the inside and outside of the eyebox EB.
このように構成することで、視認者Ｖｒの視点がアイボックスＥＢ内外の境界にある場合においても適切に虚像Ｖｉを視認させることができる。 Further, in the head-up display HUD, when all of the viewpoints VrR and VrL of both eyes of the viewer Vr move from the inside of the lattice region eb to the outside of the region, one of the viewpoints VrR and VrL of both eyes of the viewer Vr is the last. The lighting of the
With this configuration, the virtual image Vi can be appropriately visually recognized even when the viewpoint of the viewer Vr is on the boundary between the inside and outside of the eyebox EB.
また、ヘッドアップディスプレイＨＵＤは、視認者Ｖｒの両眼の視点ＶｒＲ，ＶｒＬのすべてが格子領域ｅｂ内から領域外に移動してからの経過時間に伴って、点灯継続中の基準光源１１Ａの輝度を徐々に減光する。
このように構成することで、省電力となり、光源が発する熱を抑制できる。 Further, in the head-up display HUD, the brightness of thereference light source 11A that continues to be lit with the elapsed time from the movement of all the viewpoints VrR and VrL of both eyes of the viewer Vr from the inside of the lattice region eb to the outside of the region. Gradually dims.
With such a configuration, power can be saved and heat generated by the light source can be suppressed.
このように構成することで、省電力となり、光源が発する熱を抑制できる。 Further, in the head-up display HUD, the brightness of the
With such a configuration, power can be saved and heat generated by the light source can be suppressed.
本開示のヘッドアップディスプレイＨＵＤは、以下の変更をしてもよい。
The head-up display HUD of the present disclosure may be modified as follows.
上記実施形態において、制御回路基板は、光源１１の各々に対し多様な点灯強度を設定するようにした。光源１１の各々に対し多様な点灯強度とは、光源１１すべてが一様な点灯強度でないことを表す。言い換えれば、光源１１の各々に対し個別に異なる点灯強度を設定するようにした。また、光源１１の各々に対し多様な点灯強度を設定するにあたり、アイボックスＥＢの１つの格子領域に対し複数の光源１１を対応させる場合、光源１１を複数の群に分け、各群ごとに点灯強度を設定するようにしてもよい。
In the above embodiment, the control circuit board is set to various lighting intensities for each of the light sources 11. The various lighting intensities for each of the light sources 11 indicate that not all the light sources 11 have uniform lighting intensities. In other words, different lighting intensities are individually set for each of the light sources 11. Further, in setting various lighting intensities for each of the light sources 11, when a plurality of light sources 11 are associated with one grid region of the eyebox EB, the light sources 11 are divided into a plurality of groups and each group is lit. The strength may be set.
制御回路基板は、ステップＳ５において両眼の視点ＶｒＲ、ＶｒＬのいずれの視点もアイボックスＥＢの周辺にないと判断し、ステップＳ７で最後の視点に基づく光源１１の点灯強度を徐々に減光していく。制御回路基板は、この減光状態から再び両眼の視点ＶｒＲ、ＶｒＬのいずれかがアイボックスＥＢ内あるいはその周辺に入った場合に、目的の点灯強度に近づくように徐々に昇光してもよい。このように構成することで、減光状態から急に点灯強度が上昇したときに視認者Ｖｒを幻惑する虞を低減できる。
In step S5, the control circuit board determines that neither the viewpoints VrR or VrL of both eyes is around the eyebox EB, and in step S7, the lighting intensity of the light source 11 based on the last viewpoint is gradually dimmed. To go. When either the viewpoint VrR or VrL of both eyes enters the eye box EB or its vicinity again from this dimmed state, the control circuit board may gradually brighten so as to approach the target lighting intensity. Good. With this configuration, it is possible to reduce the risk of dazzling the viewer Vr when the lighting intensity suddenly increases from the dimmed state.
視点情報は、視認者Ｖｒの両眼の視点ＶｒＲ，ＶｒＬに限られない。例えば、制御回路基板は、視認者Ｖｒの眉間の位置を外部の視点検出装置から得て、この眉間の位置から視認者Ｖｒの両眼の視点ＶｒＲ，ＶｒＬを推定してもよい。
The viewpoint information is not limited to the viewpoints VrR and VrL of both eyes of the viewer Vr. For example, the control circuit board may obtain the position between the eyebrows of the viewer Vr from an external viewpoint detection device and estimate the viewpoints VrR and VrL of both eyes of the viewer Vr from the position between the eyebrows.
また、視点検出装置をヘッドアップディスプレイＨＵＤに内蔵してもよい。
Further, the viewpoint detection device may be built in the head-up display HUD.
ＨＵＤ ヘッドアップディスプレイ
１ 表示器
１１ 光源
１１Ａ 基準光源
１２ フィールドレンズ
１３ 液晶パネル
２ 反射鏡
ＤＬ 表示光
Ｖｉ 虚像
ＷＳ ウインドシールド
ＥＢ アイボックス
ｅｂ 格子領域
Ｖｒ 視認者
ＶｒＲ 右眼の視点
ＶｒＬ 左眼の視点 HUD Head-updisplay 1 Display 11 Light source 11A Reference light source 12 Field lens 13 Liquid crystal panel 2 Reflector DL Display light Vi Virtual image WS Windshield EB Eyebox eb Lattice area Vr Viewer VrR Right eye viewpoint VrL Left eye viewpoint
１ 表示器
１１ 光源
１１Ａ 基準光源
１２ フィールドレンズ
１３ 液晶パネル
２ 反射鏡
ＤＬ 表示光
Ｖｉ 虚像
ＷＳ ウインドシールド
ＥＢ アイボックス
ｅｂ 格子領域
Ｖｒ 視認者
ＶｒＲ 右眼の視点
ＶｒＬ 左眼の視点 HUD Head-up
Claims (3)
- 二次元平面上に配列された複数の光源と、
前記光源によって透過照明されて表示情報を表す表示光を出射する表示器と、
前記複数の光源の各々に対し多様な照明強度で照明させる制御部と、を備え、
前記表示光の虚像を視認させるヘッドアップディスプレイであって、
前記複数の光源の各々は、前記虚像の視認可能領域となるアイボックスを格子状に分割したいずれかの格子領域に対応し、
前記制御部は、前記虚像を視認する視認者の視点に関する視点情報が入力され、前記視点情報に基づく前記視認者の両眼の各々の視点が入る前記格子領域に対応する前記光源である基準光源を点灯させ、
前記制御部は、前記視認者の両眼の視点のいずれか一方の視点のみが前記格子領域内にいるとき、前記一方の視点が入る前記格子領域に対応する前記基準光源を点灯させる、
ヘッドアップディスプレイ。 Multiple light sources arranged on a two-dimensional plane,
A display that emits display light that is transmitted and illuminated by the light source and represents display information.
A control unit for illuminating each of the plurality of light sources with various illumination intensities is provided.
A head-up display that allows the virtual image of the display light to be visually recognized.
Each of the plurality of light sources corresponds to any lattice region obtained by dividing the eye box, which is a visible region of the virtual image, into a grid pattern.
The control unit is a reference light source which is a light source corresponding to the lattice region in which viewpoint information regarding the viewpoint of a viewer who visually recognizes the virtual image is input and the viewpoints of both eyes of the viewer based on the viewpoint information are entered. Turn on
When only one of the viewpoints of both eyes of the viewer is in the grid region, the control unit lights the reference light source corresponding to the grid region into which the one viewpoint enters.
Head-up display. - 前記制御部は、前記視認者の両眼の視点のすべてが前記格子領域内から領域外に移動したとき、前記視認者の両眼の視点のいずれかが最後に入っていた前記格子領域に対応する前記基準光源の点灯を継続する、
請求項１のヘッドアップディスプレイ。 When all the viewpoints of both eyes of the viewer move from the inside of the grid region to the outside of the region, the control unit corresponds to the grid region in which any of the viewpoints of both eyes of the viewer is last entered. Continue lighting the reference light source.
The head-up display of claim 1. - 前記制御部は、前記視認者の両眼の視点のすべてが前記格子領域内から領域外に移動してからの経過時間に伴って、前記点灯継続中の前記基準光源の輝度を徐々に減光する、
請求項２のヘッドアップディスプレイ。 The control unit gradually dims the brightness of the reference light source during which the lighting continues, with the elapsed time from the movement of all the viewpoints of both eyes of the viewer from the inside of the grid region to the outside of the grid region. To do,
The head-up display of claim 2.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010072254A (en) * | 2008-09-17 | 2010-04-02 | Toshiba Corp | Display device and mobile body |
| JP2012047893A (en) * | 2010-08-25 | 2012-03-08 | Toshiba Corp | Display device and display method |
| KR20140079987A (en) * | 2012-12-20 | 2014-06-30 | 에스엘 주식회사 | Apparatus to control the image of head-up display |
| WO2017002344A1 (en) * | 2015-07-01 | 2017-01-05 | パナソニックＩｐマネジメント株式会社 | Head-up display and moving body comprising head-up display |
| JP2018045143A (en) * | 2016-09-15 | 2018-03-22 | 株式会社デンソー | Head-up display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010072254A (en) * | 2008-09-17 | 2010-04-02 | Toshiba Corp | Display device and mobile body |
| JP2012047893A (en) * | 2010-08-25 | 2012-03-08 | Toshiba Corp | Display device and display method |
| KR20140079987A (en) * | 2012-12-20 | 2014-06-30 | 에스엘 주식회사 | Apparatus to control the image of head-up display |
| WO2017002344A1 (en) * | 2015-07-01 | 2017-01-05 | パナソニックＩｐマネジメント株式会社 | Head-up display and moving body comprising head-up display |
| JP2018045143A (en) * | 2016-09-15 | 2018-03-22 | 株式会社デンソー | Head-up display device |
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